可能能让某人一个较高的化合物水平值不是一个不同的水平值能保持更久些。
And perhaps giving someone an elevated level of chemicals, but not a varied level of these chemicals is going about the fix-it routine a bit longer.
在广州选择不同的区研究了广州大气中羰基化合物的浓度水平，分布特征及来源。
Concentration, distributions and source of carbonyl compounds were studied in various districts of Guangzhou.
天然产物文库1是由基于金雀花碱的1，271个不同的化合物构成的并且能够在微量的，微摩尔级的水平上传送VE-PTP抑制剂（见图1）。
The natural product library 1 (see image 1) is made of 1,271 different compounds, based on the alkaloid cytisine, and delivers VE-PTP inhibitors in the low, micromolar range.
天然产物文库1是由基于金雀花碱的1，271个不同的化合物构成的并且能够在微量的，微摩尔级的水平上传送VE-PTP抑制剂（见图1）。
The natural product library 1 (see image 1) is made of 1,271 different compounds, based on the alkaloid cytisine, and delivers VE-PTP inhibitors in the low, micromolar range.
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